Enzyme production at Novozymes (enzyme producer) is based on fermentation of raw materials such as potato flour and cornstarch. The fermentation process generates about 150,000 m3 of solid biomass and 90,000 m3 of liquid biomass. After inactivation and hygienisation, the biomass is used by some 600 farmers as fertiliser in the fields, thereby reducing their need for commercial fertilisers (Kalundborg Centre for Industrial Symbiosis 2004).
The insulin production of Novo Nordisk (pharmaceutical company) provides feed for pigs. The insulin production builds on a fermentation process in which some of the main ingredients are sugar and salt, which are converted into insulin by adding yeast. After a heating process, the yeast, a residual product in this production, is converted into a valuable feed: yeast slurry. Sugar water and lactic acid bacteria are added to the yeast, making the product more attractive to pigs. Novo Nordisk’s yeast slurry replaces approx. 20% of the soy proteins in traditional feed mixes. Over 800,000 pigs are fed on this product, containing yeast slurry (Kalundborg Centre for Industrial Symbiosis 2004).
The desulphurisation process of the Statoil oil refinery reduces the sulphur contents of the refinery gas. The by-product of this process is ammonium thiosulphate, which is used in the production of about 20,000 tonnes of liquid fertiliser (Kalundborg Centre for Industrial Symbiosis 2004).
| Industry Sector | Specific Industry |
|---|---|
| enzyme production |
|
| pharmaceutical |
|
| petroleum |
|
Kalundborg, Denmark
Economic |
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|---|---|
Environment |
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Social |
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None.
20 July 2010